Volume 12 completes the alphabetical Formula Index. The index covers aII volumes of the Eighth Edition through 1974 for the Main Series and through 1973 for the New Supplement Series. In aII, there are more than 142,000 entries. aII definite elements, compounds, ions, and systems discussed in the The index includes volumes covered. The substances are arranged by their empirical formulas. In the second col­ umn the usual formula is given. The elements are entered by their symbols.... More Description